Vonleh sustained the hernia in workouts.
The Hornets selected Vonleh as the No. 9 pick in the 2014 NBA draft. He was named Big Ten Freshman of the Year after averaging 11.3 points, 9.0 rebounds and 1.4 blocks last season at Indiana.
Charlotte opens the 2014-15 season on Oct. 29 against the Milwaukee Bucks.
- Molly Geary